Yoko Shimomura(下村 陽子,Shimomura Yōko?, b. October 19, 1967) is a Japanesecomposer who makes video game music. She has worked with Capcom and Square Enix. She is best known for composing music for the Kingdom Hearts and Mario & Luigi series. Many of her works have been performed in video game music concerts. She left Square in 2002 and currently works as a freelancer but has or is working on six Kingdom Hearts games and the Mario & Luigi series. Shem is also working on Final Fantasy Versus XIII.